Yields of functionalized sexithiophenes through the Stille reaction are greatly ameliorated using in situ generated Pd(AsPh3)(4) as the catalyst. The regiospecific synthesis of a new head-to-head/tail-to-tail hexa(methylsulfanyl)sexithiophene is reported. An sexithiophenes were distilled under high vacuum to reach the degree of purity required for use in electronic applications. (C) 1997 Elsevier Science Ltd.
Folli, Ugo; Iarossi, Dario; Montorsi, Mauro, Journal of the Chemical Society. Perkin transactions I, 1995, # 5, p. 537 - 540